1"============================================================================
2"File:        lintr.vim
3"Description: Syntax checking plugin for syntastic.vim
4"Maintainer:  Jim Hester <james.f.hester at gmail dot com>
5"License:     This program is free software. It comes without any warranty,
6"             to the extent permitted by applicable law. You can redistribute
7"             it and/or modify it under the terms of the Do What The Fuck You
8"             Want To Public License, Version 2, as published by Sam Hocevar.
9"             See http://sam.zoy.org/wtfpl/COPYING for more details.
10"
11"============================================================================
12"
13" Security:
14"
15" This checker runs the code in your file.  This is probably fine if you
16" wrote the file yourself, but it can be a problem if you're trying to
17" check third party files.  If you are 100% willing to let Vim run the
18" code in your file, set g:syntastic_enable_r_lintr_checker to 1 in
19" your vimrc to enable this checker:
20"
21let g:syntastic_enable_r_lintr_checker = 1
22
23if exists("g:loaded_syntastic_r_lintr_checker")
24    finish
25endif
26let g:loaded_syntastic_r_lintr_checker = 1
27
28if !exists('g:syntastic_r_lintr_linters')
29    let g:syntastic_r_lintr_linters = 'default_linters'
30endif
31
32if !exists('g:syntastic_r_lintr_cache')
33    let g:syntastic_r_lintr_cache = 'FALSE'
34endif
35
36let s:save_cpo = &cpo
37set cpo&vim
38
39function! SyntaxCheckers_r_lintr_GetHighlightRegex(item)
40    let term = matchstr(a:item['text'], "\\m'\\zs[^']\\+\\ze'")
41    return term != '' ? '\V' . escape(term, '\') : ''
42endfunction
43
44function! SyntaxCheckers_r_lintr_IsAvailable() dict
45    if !executable(self.getExec())
46        return 0
47    endif
48    call system(self.getExecEscaped() . ' --slave --no-restore --no-save -e ' . syntastic#util#shescape('library(lintr)'))
49    return v:shell_error == 0
50endfunction
51
52function! SyntaxCheckers_r_lintr_GetLocList() dict
53    if !exists('g:syntastic_enable_r_lintr_checker') || !g:syntastic_enable_r_lintr_checker
54        call syntastic#log#error('checker r/lintr: checks disabled for security reasons; set g:syntastic_enable_r_lintr_checker to 1 to override')
55        return []
56    endif
57
58    let setwd = syntastic#util#isRunningWindows() ? 'setwd(''' . escape(getcwd(), '"\') . '''); ' : ''
59    let makeprg = self.getExecEscaped() . ' --slave --no-restore --no-save' .
60        \ ' -e ' . syntastic#util#shescape(setwd . 'suppressPackageStartupMessages(library(lintr)); ' .
61        \       'lint(cache = ' . g:syntastic_r_lintr_cache . ', commandArgs(TRUE), ' . g:syntastic_r_lintr_linters . ')') .
62        \ ' --args ' . syntastic#util#shexpand('%')
63
64    let errorformat =
65        \ '%W%f:%l:%c: style: %m,' .
66        \ '%W%f:%l:%c: warning: %m,' .
67        \ '%E%f:%l:%c: error: %m,'
68
69    call self.setWantSort(1)
70
71    return SyntasticMake({
72        \ 'makeprg': makeprg,
73        \ 'errorformat': errorformat,
74        \ 'returns': [0] })
75endfunction
76
77call g:SyntasticRegistry.CreateAndRegisterChecker({
78    \ 'filetype': 'r',
79    \ 'name': 'lintr',
80    \ 'exec': 'R' })
81
82let &cpo = s:save_cpo
83unlet s:save_cpo
84
85" vim: set et sts=4 sw=4:
86